Bilstein B8 Performance Plus Rear Shock Absorber — Fits 2015-2021 Subaru WRX / STI

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SKU: BIL24-249508
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Bilstein

Bilstein has been the OE shock supplier to Mercedes-Benz, BMW, Porsche, and Ferrari since 1957. German-engineered B4 OE replacements, B6 sport, B8 lift-corrected, and B14/B16 coilovers — every Bilstein damper carries motorsport-derived monotube technology.

Watch in action

Sport Performance for Lowered Subaru WRX/STI

The Bilstein B8 Performance Plus rear shock absorber is the definitive solution for owners of the 2015-2021 Subaru WRX and STI who have installed aftermarket lowering springs. These shocks are specifically designed to handle the increased spring rates and reduced travel associated with lowered vehicles.

Why Choose B8 Performance Plus?

  • Optimized for Lowering Springs: Shortened stroke length ensures proper damping performance on lowered vehicles.
  • Superior Handling: Delivers a sportier, more responsive feel, perfect for aggressive street driving.
  • Monotube Technology: Provides consistent, fade-free performance and excellent heat dissipation.
  • Rigorous Testing: Each unit is tested to meet or exceed OE standards, ensuring safety and longevity.

When you lower your Subaru, standard shocks often bottom out or fail to control the spring properly. The Bilstein B8 is engineered to solve this by providing the correct damping force for a lowered stance. This results in improved cornering, better stability, and a more aggressive aesthetic. If you are looking to get the most out of your lowering spring setup, the B8 Performance Plus is the essential component to complete your suspension build. Experience the precision and quality that comes with Bilstein's world-class engineering, available now at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2015-2021 Subaru WRX Base
2015-2021 Subaru WRX Limited
2015-2021 Subaru WRX Premium
2015 Subaru WRX STI Launch Edition
2015-2021 Subaru WRX STI Base
2015-2021 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2019 Subaru WRX STI S209

Product Details

Product Description
Part Numbers
Sizing & Fit

About Bilstein

Bilstein has been the OE shock supplier to Mercedes-Benz, BMW, Porsche, and Ferrari since 1957. German-engineered B4 OE replacements, B6 sport, B8 lift-corrected, and B14/B16 coilovers — every Bilstein damper carries motorsport-derived monotube technology.

Watch in action

Sport Performance for Lowered Subaru WRX/STI

The Bilstein B8 Performance Plus rear shock absorber is the definitive solution for owners of the 2015-2021 Subaru WRX and STI who have installed aftermarket lowering springs. These shocks are specifically designed to handle the increased spring rates and reduced travel associated with lowered vehicles.

Why Choose B8 Performance Plus?

  • Optimized for Lowering Springs: Shortened stroke length ensures proper damping performance on lowered vehicles.
  • Superior Handling: Delivers a sportier, more responsive feel, perfect for aggressive street driving.
  • Monotube Technology: Provides consistent, fade-free performance and excellent heat dissipation.
  • Rigorous Testing: Each unit is tested to meet or exceed OE standards, ensuring safety and longevity.

When you lower your Subaru, standard shocks often bottom out or fail to control the spring properly. The Bilstein B8 is engineered to solve this by providing the correct damping force for a lowered stance. This results in improved cornering, better stability, and a more aggressive aesthetic. If you are looking to get the most out of your lowering spring setup, the B8 Performance Plus is the essential component to complete your suspension build. Experience the precision and quality that comes with Bilstein's world-class engineering, available now at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2015-2021 Subaru WRX Base
2015-2021 Subaru WRX Limited
2015-2021 Subaru WRX Premium
2015 Subaru WRX STI Launch Edition
2015-2021 Subaru WRX STI Base
2015-2021 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2019 Subaru WRX STI S209

Product Details

Product Description

About Bilstein

Bilstein has been the OE shock supplier to Mercedes-Benz, BMW, Porsche, and Ferrari since 1957. German-engineered B4 OE replacements, B6 sport, B8 lift-corrected, and B14/B16 coilovers — every Bilstein damper carries motorsport-derived monotube technology.

Watch in action

Sport Performance for Lowered Subaru WRX/STI

The Bilstein B8 Performance Plus rear shock absorber is the definitive solution for owners of the 2015-2021 Subaru WRX and STI who have installed aftermarket lowering springs. These shocks are specifically designed to handle the increased spring rates and reduced travel associated with lowered vehicles.

Why Choose B8 Performance Plus?

  • Optimized for Lowering Springs: Shortened stroke length ensures proper damping performance on lowered vehicles.
  • Superior Handling: Delivers a sportier, more responsive feel, perfect for aggressive street driving.
  • Monotube Technology: Provides consistent, fade-free performance and excellent heat dissipation.
  • Rigorous Testing: Each unit is tested to meet or exceed OE standards, ensuring safety and longevity.

When you lower your Subaru, standard shocks often bottom out or fail to control the spring properly. The Bilstein B8 is engineered to solve this by providing the correct damping force for a lowered stance. This results in improved cornering, better stability, and a more aggressive aesthetic. If you are looking to get the most out of your lowering spring setup, the B8 Performance Plus is the essential component to complete your suspension build. Experience the precision and quality that comes with Bilstein's world-class engineering, available now at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2015-2021 Subaru WRX Base
2015-2021 Subaru WRX Limited
2015-2021 Subaru WRX Premium
2015 Subaru WRX STI Launch Edition
2015-2021 Subaru WRX STI Base
2015-2021 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2019 Subaru WRX STI S209

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